Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (2NUK042C, 2NUK042A and 2NUK042D)
Received: 18 April 2020
Accepted: 23 July 2020
First Online: 9 September 2020
Ethics approval and consent to participate
: We certify that all applicable institutional and governmental regulations concerning the ethical use of human volunteers were followed during this research. Approval by the Ethics Committee of the Medical Association of Rhineland-Palatinate was obtained (no. 837.262.12 (8363-F), no. 837.103.04 (4261) and no. 837.440.03 (4102)). Study participants will not undergo any procedures unless they give consent for examinations, collection of samples, subsequent analysis and storage of personal data and collected samples. Study subjects can consent to single components of the study while abstaining from others.
: Not applicable.
: The authors declare no conflict of interest.